/* ==========================================================================
   Boo.click v2 — "Partitura Moderna" Main Stylesheet
   Light theme inspired by classical sheet music aesthetics
   ========================================================================== */

/* ---------- CSS Reset & Base ---------- */
*,
*::before,
*::after
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root
{
    /* Palette */
    --color-bg: #FDFBF7;
    --color-bg-warm: #F7F3EC;
    --color-surface: #FFFFFF;
    --color-surface-alt: #F0EDE6;
    --color-ink: #1A1A2E;
    --color-ink-light: #3D3D56;
    --color-ink-muted: #8A8A9A;
    --color-staff: #C4B9A8;
    --color-staff-light: #DDD5C8;
    --color-primary: #2B4C7E;
    --color-primary-dark: #1E3558;
    --color-primary-light: #4A7AB5;
    --color-accent: #E8712B;
    --color-accent-light: #F09050;
    --color-accent-dark: #C55E1F;
    --color-success: #3A8F6A;
    --color-border: #E4DED4;

    /* Typography */
    --font-display: 'Playfair Display', 'Georgia', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    --space-3xl: 8rem;

    /* Dimensions */
    --container-max: 1280px;
    --nav-height: 72px;
    --border-radius: 12px;
    --border-radius-sm: 6px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
    --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.10);
    --shadow-xl: 0 16px 48px rgba(26, 26, 46, 0.12);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 0.2s;
    --duration-normal: 0.4s;
    --duration-slow: 0.7s;
}

html
{
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body
{
    font-family: var(--font-body);
    color: var(--color-ink);
    background-color: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

a
{
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover
{
    color: var(--color-accent);
}

img
{
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---------- Container ---------- */
.container
{
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ---------- Staff Lines Background ---------- */
.staff-bg
{
    position: relative;
}

.staff-bg::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(
            to bottom,
            transparent,
            transparent 23px,
            var(--color-staff-light) 23px,
            var(--color-staff-light) 24px
        );
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.staff-bg > *
{
    position: relative;
    z-index: 1;
}

/* ---------- Staff Separator ---------- */
.staff-separator
{
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-lg) 0;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.35;
}

.staff-separator .staff-line
{
    height: 1px;
    background-color: var(--color-staff);
    border-radius: 1px;
}

/* ---------- Navigation ---------- */
.nav
{
    display: block; /* Override Bootstrap .nav flex to restore block centering */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(253, 251, 247, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: box-shadow var(--duration-normal) var(--ease-out);
}

.nav.scrolled
{
    box-shadow: var(--shadow-md);
}

.nav-inner
{
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.nav-logo
{
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: -0.02em;
}

.nav-logo .logo-dot
{
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--color-accent);
    border-radius: 50%;
    margin-left: 2px;
}

.nav-links
{
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a
{
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-ink-light);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 4px;
    white-space: nowrap;
}

.nav-links a::after
{
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--duration-normal) var(--ease-out);
}

.nav-links a:hover::after,
.nav-links a.active::after
{
    width: 100%;
}

.nav-right
{
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-lg);
    margin-left: var(--space-md);
}

/* Language Switcher */
.lang-switcher
{
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--color-surface-alt);
    border-radius: 100px;
    padding: 3px;
}

.lang-switcher button
{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 26px;
    border: none;
    background: transparent;
    color: var(--color-ink-muted);
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    text-transform: uppercase;
}

.lang-switcher button:hover
{
    color: var(--color-ink);
}

.lang-switcher button.active
{
    background: var(--color-surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.nav-cta
{
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.6rem 1.4rem;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    letter-spacing: 0.02em;
    transition: all var(--duration-fast) var(--ease-out);
}

.nav-cta:hover
{
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Login / Account button */
.nav-login-btn
{
    display: inline-flex;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    border-radius: 100px;
    padding: 0.4rem 1rem;
    letter-spacing: 0.02em;
    transition: all var(--duration-fast) var(--ease-out);
    white-space: nowrap;
}

.nav-login-btn:hover
{
    background: var(--color-primary);
    color: #fff;
}

.nav-mobile-toggle
{
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-sm);
    background: none;
    border: none;
}

.nav-mobile-toggle span
{
    width: 24px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
    transition: all var(--duration-fast) var(--ease-out);
}

/* ---------- Buttons ---------- */
.btn
{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.85rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    letter-spacing: 0.01em;
    text-decoration: none;
}

.btn-primary
{
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover
{
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(43, 76, 126, 0.25);
}

.btn-outline
{
    background: transparent;
    color: var(--color-ink);
    border: 1.5px solid var(--color-border);
}

.btn-outline:hover
{
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-accent
{
    background: var(--color-accent);
    color: #fff;
}

.btn-accent:hover
{
    background: var(--color-accent-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 113, 43, 0.25);
}

/* ---------- Hero Section ---------- */
.hero
{
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    overflow: hidden;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(43, 76, 126, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 30%, rgba(232, 113, 43, 0.03) 0%, transparent 50%),
        var(--color-bg);
}

.hero-inner
{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

.hero-content
{
    max-width: 560px;
}

.hero-badge
{
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.4rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.hero-badge .badge-dot
{
    width: 6px;
    height: 6px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot
{
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title
{
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-ink);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.hero-title .highlight
{
    color: var(--color-primary);
    position: relative;
}

.hero-title .highlight::after
{
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(232, 113, 43, 0.2);
    border-radius: 4px;
    z-index: -1;
}

.hero-subtitle
{
    font-size: 1.15rem;
    color: var(--color-ink-light);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.hero-actions
{
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-visual
{
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-staff-art
{
    position: relative;
    width: 100%;
    max-width: 520px;
}

.hero-staff-art svg
{
    width: 100%;
    height: auto;
}

/* Floating Notes Canvas */
#notes-canvas
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* ---------- Section Common ---------- */
.section
{
    padding: var(--space-3xl) 0;
    position: relative;
    z-index: 1;
}

.section-header
{
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-2xl);
}

.section-label
{
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.section-title
{
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-desc
{
    font-size: 1.05rem;
    color: var(--color-ink-muted);
    line-height: 1.8;
}

/* ---------- Services Grid ---------- */
.services-grid
{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.service-card
{
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.service-card::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-staff);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.service-card:hover
{
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before
{
    opacity: 1;
}

.service-card:nth-child(1):hover::before { background: var(--color-success); }
.service-card:nth-child(2):hover::before { background: var(--color-accent); }

.service-icon
{
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    font-size: 1.6rem;
}

.service-card:nth-child(1) .service-icon { background: rgba(58, 143, 106, 0.08); color: var(--color-success); }
.service-card:nth-child(2) .service-icon { background: rgba(232, 113, 43, 0.08); color: var(--color-accent); }

.service-title
{
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-sm);
}

.service-desc
{
    font-size: 0.9rem;
    color: var(--color-ink-muted);
    line-height: 1.7;
}

/* ---------- Learning Section ---------- */
.learning-section
{
    background: var(--color-bg-warm);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.learning-inner
{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.learning-visual
{
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.staff-display
{
    position: relative;
    min-height: 180px;
}

.staff-display svg
{
    width: 100%;
    height: auto;
}

.learning-features
{
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.learning-feature
{
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.feature-number
{
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 50%;
}

.feature-text h4
{
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 4px;
}

.feature-text p
{
    font-size: 0.9rem;
    color: var(--color-ink-muted);
    line-height: 1.6;
}

/* ---------- Shop Section ---------- */
.shop-features
{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.shop-visual
{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.shop-item
{
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-out);
}

.shop-item:hover
{
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.shop-item-icon
{
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.shop-item-title
{
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 4px;
}

.shop-item-price
{
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* ---------- Stats Section ---------- */
.stats-section
{
    background: var(--color-primary);
    color: #fff;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.stats-section::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(
            to bottom,
            transparent,
            transparent 19px,
            rgba(255, 255, 255, 0.06) 19px,
            rgba(255, 255, 255, 0.06) 20px
        );
    pointer-events: none;
}

.stats-grid
{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-item
{
    padding: var(--space-lg);
}

.stat-number
{
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label
{
    font-size: 0.9rem;
    opacity: 0.75;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

/* ---------- CTA Section ---------- */
.cta-section
{
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-inner
{
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: var(--space-3xl) var(--space-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.cta-inner::before
{
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(232, 113, 43, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-inner::after
{
    content: '';
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(43, 76, 126, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title
{
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 2.6rem);
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-md);
    position: relative;
}

.cta-desc
{
    font-size: 1.1rem;
    color: var(--color-ink-muted);
    max-width: 480px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
    position: relative;
}

/* ---------- Footer ---------- */
.footer
{
    background: var(--color-ink);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-2xl) 0 var(--space-lg);
    position: relative;
    z-index: 1;
}

.footer-grid
{
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand
{
    max-width: 280px;
}

.footer-logo
{
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--space-md);
}

.footer-logo .logo-dot
{
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}

.footer-brand p
{
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col h4
{
    color: #fff;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-col ul
{
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col a
{
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--duration-fast) var(--ease-out);
}

.footer-col a:hover
{
    color: var(--color-accent);
}

.footer-bottom
{
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
}

.footer-social
{
    display: flex;
    gap: var(--space-md);
}

.footer-social a
{
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: all var(--duration-fast) var(--ease-out);
}

.footer-social a:hover
{
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px)
{
    .hero-inner
    {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }

    .hero-content
    {
        max-width: 100%;
    }

    .hero-actions
    {
        justify-content: center;
    }

    .hero-visual
    {
        max-width: 480px;
        margin: 0 auto;
    }

    .learning-inner,
    .shop-features
    {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer-grid
    {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 900px)
{
    /* Hide CTA button when space gets tight — it's available in mobile menu */
    .nav-cta
    {
        display: none;
    }
}

@media (max-width: 768px)
{
    .nav-links
    {
        display: none;
    }

    .nav-mobile-toggle
    {
        display: flex;
    }

    .nav-right
    {
        border-left: none;
        padding-left: 0;
        margin-left: 0;
        gap: var(--space-sm);
    }

    /* Lang switcher is already inside the mobile menu — hide from nav bar */
    .nav-right .lang-switcher
    {
        display: none;
    }

    .services-grid
    {
        grid-template-columns: 1fr;
    }

    .stats-grid
    {
        grid-template-columns: repeat(2, 1fr);
    }

    .shop-visual
    {
        grid-template-columns: 1fr 1fr;
    }

    .footer-grid
    {
        grid-template-columns: 1fr;
    }

    .footer-bottom
    {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px)
{
    :root
    {
        --space-lg: 1.25rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 5rem;
    }

    .hero-title
    {
        font-size: 2.2rem;
    }

    .hero-actions
    {
        flex-direction: column;
    }

    .btn
    {
        width: 100%;
    }

    .shop-visual
    {
        grid-template-columns: 1fr;
    }
}